COMPONENTS

CS451 and CS456Submersible Pressure Transducers

Rugged and AccurateIdeal for long-term deployment

in harsh conditions

www.campbellsci.com/cs451

questions & quotes: 435.227.9120

OverviewCampbell Scientific’s CS451 and CS456 submersible pressure transducers provide reliable, accurate pressure and temperature measurements. Their rugged construction makes them suitable for water level measurements in canals, wells, ponds, harbors, lakes, streams and tanks.

These transducers consist of a piezoresistive sensor and a tem-perature sensor housed in a metal case. The CS451 has a 316L stainless-steel case that can be submerged in most canals, wells, ponds, lakes, and streams. The CS456 has a rugged titanium case that allows it to be used in saltwater or other harsh environments.

Benefits and FeaturesOutput acceptable for recording devices with SDI-12 or RS-232 capability including Campbell Scientific dataloggers.Static accuracies of ±0.1% full-scale range and ±0.05% full-scale range1 available. Accuracies are over 0° to 60°C range.Quality construction that ensures product reliability.Rugged stainless steel or titanium case that protects piezore-sistive sensor.

Fully temperature compensated.Simultaneous 50/60 Hz rejection.Low power sleep state between measurements that reduces power consumption.Weighted nose cone option available for easier submersion. Adds 0.211 kg (0.465 lb) to the transducer’s weight. NPT nose cone option available for closed-pipe applications.

Technical DetailsBoth transducers output either a digital SDI-12 or RS-232 signal to indicate observed pressure and temperature. This output is acceptable for recording devices with SDI-12 or RS-232 capability including Campbell Scientific dataloggers.

The CS451 and CS456 are fitted with a rugged Hytrel cable that re-mains flexible, even under harsh environmental conditions. The cable incorporates a vent tube to compensate for atmospheric pressure fluctuations. The vent tube terminates inside a desiccant tube, which prevents water vapor from entering the inner cavity of the transducer.

weighted nose cone

¼ inch NPT nose cone

standard nose cone

© 2012, 2017Campbell Scientific, Inc.

August 25, 2017

aFor more information about the options and accessories, refer to: www.campbellsci.com/order/cs451 or www.campbellsci.com/order/cs456bTotal Error Band (TEB) includes the combined errors due to nonlinearity, hysteresis, nonrepeatability, and thermal effects over the compensated tempera-ture range, per ISA S51.1.cThe high accuracy (±0.05% FS) option is not available for some pressure range options. For more information, refer to www.campbellsci.com/order/cs451 or www.campbellsci.com/order/cs456. d WARNING: Sensor could be damaged if encased in frozen liquid.

Optionsa

Cable length: 15 ft, 17 ft, 30 ft, 33 ft, 50 ft, 75 ft, 100 ft, 200 ft, or user-specifiedAccuracy: standard 0.1% full-scale range TEBb or high 0.05% full-scale range TEBb

Pressure rangesc: up to 2.9 psig, 7.25 psig, 14.5 psig, 29 psig, 72.5 psig, or 145 psigNose cone: standard, weighted (for easier submersion), or ¼ inch NPT (for closed-pipe applications)

Accessoriesa

Split Mesh Cable Grip (pn 25431)Replacement Desiccant Tube (pn 25366)A200 Sensor to PC Interface (for configuring sensor)

A150-L Single Sensor Terminal Case, Vented with DesiccantHeyco Cable Grip (pn 31648) for mating with a 1 in. PVC pipe

SpecificationsPower Requirements: 6 to 18 VdcMeasurement Time: < 1.5 sOutputs: SDI-12 (version 1.3) 1200 bps; RS-232 9600 bpsMeasurement Ranges:

Pressure (psig) Pressure (kPa) Depth of fresh water0 to 2.9c 0 to 20c 0 to 2.0 m (6.7 ft)c

0 to 7.25 0 to 50 0 to 5.1 m (16.7 ft)0 to 14.5 0 to 100 0 to 10.2 m (33.4 ft)0 to 29 0 to 200 0 to 20.4 m (67 ft)0 to 72.5 0 to 500 0 to 50.9 m (167 ft)0 to 145 0 to 1000 0 to 102 m (334.5 ft)

Water-Level Resolution: 0.0035% full-scale rangeWorst-Case Temperature Resolution: 0.006°COverpressure: 2 x pressure rangeDry Storage Temperatured: -10° to 80°COperating Temperatured: 0° to 60°CTemperature Accuracy: ±0.2°CCable Type: 5 Conductor, 26 AWG, Hytrel JacketTop Cone Material: DelrinDiameter: 21.34 mm (0.84 in)Length: 213.36 mm (6.875 in)View EU Declaration of Conformity at: www.campbellsci.com/cs451 www.campbellsci.com/cs456 Cable Weight: 0.0421 kg/m (0.0283 lb/ft)

AccuracyStandard Option: ±0.1% full-scale range TEBb

High Option: ±0.05% full-scale range TEBb

Power ConsumptionQuiescent Current: < 50 μAMeasurement/Communication Current: 8 mA for 1 s measurementMaximum Peak Current: 40 mA

Maximum Cable LengthSDI-12 (one transducer connected to a single port): ~457 m (1500 ft)SDI-12 (10 transducers connected to a single port): 60 m (200 ft)RS-232: 60 m (200 ft)

Distance from pressure sensor interface (black line etched on housing) to:

End of Standard Nose Cone: 2.3 cm (0.9 in)End of NPT Nose Cone: 2.54 cm (1 in)End of Weighted Nose Cone: 9.9 cm (3.9 in)

Air GapStandard and weighted nose cone: 0.653 cm (0.257 in)NPT Nose Cone: 2.72 cm (1.07 in)

Material and WeightSensor Material WeightCS451 316L stainless steel (body and element) 0.17 kg (0.37 lb)

CS456 Titanium (body), Hastelloy (element) 0.10 kg (0.23 lb)

Campbell Scientific, Inc. | 815 W 1800 N | Logan, UT 84321-1784 | (435) 227-9120 | www.campbellsci.comUSA | AUSTRALIA | BRAZIL | CANADA | CHINA | COSTA RICA | FRANCE | GERMANY | SE ASIA | SOUTH AFRICA | SPAIN | UK